ELGI Equipments Principal Engineer Interview Questions, Process, and Tips

Implement stack data structure

• Use an array or linked list to store elements

• Push operation adds element to top of stack

• Pop operation removes element from top of stack

• Peek operation returns top element without removing it

Global variables are accessible from any part of the program and can be modified by any function.

• Global variables are declared outside of any function.

• They can be accessed and modified by any function in the program.

• If a function modifies the value of a global variable, the new value is visible to all other functions.

• Global variables can be useful for sharing data between functions.

• However, overuse of global variables

Program to transpose a matrix

• Iterate through rows and columns of the matrix

• Swap the elements at (i,j) and (j,i) positions

• Return the transposed matrix

Pre and post fix operators are used to increment or decrement a value before or after it is used in an expression.

• Pre-fix operator (++x) increments the value of x and returns the new value.

• Post-fix operator (x++) returns the value of x and then increments it.

• Both operators can be used with variables of numeric data types.

• They can also be used with pointers to increment or decrement the memory address they point to.

DCS tag assigning process involves assigning unique names to process variables for monitoring and control.

• DCS tag assigning process is crucial for efficient process control and monitoring.

• Each tag represents a process variable and is assigned a unique name for easy identification.

• Tags can be assigned manually or automatically based on the process requirements.

• Tag naming conventions should be consistent and follow indus...read more